Expandable baton

Abstract

Some embodiments of the disclosure provide an expandable baton, which includes a plurality of sleeves, a positioning ring, a plurality of locking pieces and an unlocking rod, wherein the plurality of sleeves are retractably disposed in sequence in a nesting manner; the positioning ring is provided with an avoiding hole; the plurality of locking pieces are disposed at intervals around a peripheral side of the positioning ring and enclose an avoiding space, first axial ends of the plurality of locking pieces extend into the sleeve positioned on an inner side, and second axial ends of the plurality of locking pieces extend out of the sleeve positioned on the inner side and are stuck in a sleeve, positioned on an outer side, of the two adjacent sleeves to lock two adjacent sleeves in an extending state.

What is claimed is: 
     
       1. An expandable baton, comprising:
 a plurality of sleeves, the plurality of sleeves being retractably disposed in sequence in a nesting manner; 
 a positioning ring, the positioning ring being provided with an avoiding hole; 
 a plurality of locking pieces, wherein the plurality of locking pieces are disposed at intervals around a peripheral side of the positioning ring and enclose an avoiding space, each of the plurality of locking pieces is connected with a sleeve, positioned on an inner side, of two adjacent sleeves in the plurality of sleeves, first axial ends of the plurality of locking pieces extend into the sleeve—positioned on the inner side, and second axial ends of the plurality of locking pieces extend out of the sleeve positioned on the inner side and are stuck in a sleeve, positioned on an outer side, of the two adjacent sleeves to lock the two adjacent sleeves in an extending state; and 
 an unlocking rod, wherein the unlocking rod is retractably disposed in the sleeve which is on the outer side of the two adjacent sleeves, and when the unlocking rod extends into the avoiding space and, after passing through the avoiding hole, is pressed against the first axial ends of the plurality of locking pieces, the first axial ends of the plurality of locking pieces extend outwards under a pressing action of the unlocking rod, and the each of the plurality of locking pieces rotates by taking the positioning ring as a fulcrum, so that the second axial ends of the plurality of locking pieces are radially retracted and separated from the sleeve, positioned on the outer side, of the two adjacent sleeves and make the two adjacent sleeves in a free extension and retraction state; 
 wherein the expandable baton further comprises positioning grooves formed in the plurality of locking pieces, the positioning ring comprises a positioning ring body and the avoiding hole is formed in the positioning ring body, the positioning ring body is disposed in each positioning groove; 
 wherein a clamping groove is formed in an inner wall of the sleeve, positioned on the outer side, of the two adjacent sleeves, a clamping flange is disposed at the second axial end of the each of the plurality of locking pieces, and the clamping flange extends into the clamping groove to clamp and connect the each of the plurality of locking pieces and the sleeve, positioned on the outer side, of the two adjacent sleeves; and the clamping flange withdraws from the clamping groove under a pushing action of the unlocking rod to separate the each of the plurality of locking pieces from the sleeve, positioned on the outer side, of the two adjacent sleeves. 
 
     
     
       2. The expandable baton as claimed in  claim 1 , wherein the positioning ring comprises a plurality of positioning bumps disposed on a peripheral surface of the positioning ring body in a protruding manner, the plurality of positioning bumps cooperates with the positioning grooves in a clamping manner, the plurality of locking pieces cooperates with the plurality of positioning bumps in a one-to-one correspondence manner. 
     
     
       3. The expandable baton as claimed in  claim 1 , wherein an avoiding groove is formed in an inner wall surface of the sleeve, positioned on the inner side, of the two adjacent sleeves, so as to form a limiting bump at a pipe orifice of the sleeve, positioned on the inner side, of the two adjacent sleeves, a limiting groove is formed in an outer wall surface of the each of the plurality of locking pieces, and the limiting bump extends into the limiting groove to clamp and connect the each of the plurality of locking piece and the sleeve, positioned on the inner side, of the two adjacent sleeves. 
     
     
       4. The expandable baton as claimed in  claim 1 , further comprising an elastic ring, wherein the elastic ring is disposed on a peripheral side of the plurality of locking pieces in a sleeving manner. 
     
     
       5. The expandable baton as claimed in  claim 4 , wherein the elastic ring comprises a first elastic ring and a second elastic ring, the first elastic ring is disposed at the first axial ends of the plurality of locking pieces in the sleeving manner, and the second elastic ring is disposed at the second axial ends of the plurality of locking pieces in the sleeving manner. 
     
     
       6. The expandable baton as claimed in  claim 5 , wherein a first positioning groove adapted to the first elastic ring is formed in a peripheral surface of the first axial end of each of the plurality of locking pieces, a second positioning groove adapted to the second elastic ring is formed in a peripheral surface of the second axial end of each of the plurality of locking pieces, and the second positioning groove is positioned between the clamping flange and the first positioning groove. 
     
     
       7. An expandable baton, comprising:
 a plurality of sleeves, the plurality of sleeves being retractably disposed in sequence in a nesting manner; 
 a lock body, wherein the lock body is provided with an avoiding space, a peripheral surface of the lock body is connected with a sleeve, positioned on an inner side, of two adjacent sleeves in the plurality of sleeves, a first axial end of the lock body extends into the sleeve, positioned on the inner side, of the two adjacent sleeves, and a second axial end of the lock body extends out of the sleeve, positioned on the inner side, of the two adjacent sleeves and is stuck in a sleeve, positioned on an outer side, of the two adjacent sleeves, so as to lock the two adjacent sleeves in an extending state; and 
 an unlocking rod, wherein the unlocking rod is retractably disposed in the sleeve which is positioned on the outer side of the two adjacent sleeves, and when the unlocking rod extends into the avoiding space and is pressed against the first end of the lock body, the lock body is elastically deformed under a pressing action of the unlocking rod, so that the second axial end of the lock body retract and separate radially from the sleeve, positioned on the outer side, of the two adjacent sleeves and make the two adjacent sleeves in a free extension and retraction state. 
 
     
     
       8. The expandable baton as claimed in  claim 7 , wherein
 the lock body comprises a plurality of long-strip bodies connected end to end; or 
 a plurality of avoiding nicks circumferentially formed at intervals are formed on the lock body, and the plurality of avoiding nicks extend along an axial direction of the lock body. 
 
     
     
       9. The expandable baton as claimed in  claim 7 , wherein a clamping groove is formed in an inner wall of the sleeve, positioned on the outer side, of the two adjacent sleeves, a clamping tooth is disposed at the second axial end of the lock body, and the clamping tooth extends into the clamping groove to clamp and connect the lock body and the sleeve, positioned on the outer side, of the two adjacent sleeves; and the clamping tooth withdraws from the clamping groove under a pushing action of the unlocking rod to separate the lock body from the sleeve, positioned on the outer side, of the two adjacent sleeves.